Improvement in telegraphic relays



PATENTBD DEG. 13, 1870.

B. B. TOYB.

TBLBGRAPHIU RELAY.

@sind (affita BENJAMIN BIRDWOOD TOYE, OF TORONTO, CANADA..

Letters Patent No.v 110,090, dated December 13', 1 870.

IMPROVEMENT IN TELEGRAPHIC RELAYS.

The Schedule referred to in than Letten Patent and making part of the uma.

I, BENJAMIN BIRDwooD 'loYrqof the city of 'Ioronto, county cf York, province of Ont-ario,`and Dominion of Canada, have invented certain new and useful Improvements in Telegraphic Relays, vof which the following is a specification.

Nature of the Invention. The object of this invention is to. improve the working of electric telegraphs, vmore particularly 'does away with the usnal,crcssbar;

Also, a safetyadjuster, so constructed that it cannot be over-stretched;

Also, -an auxiliary adjuster to cnt out one of the spools' or a portion ot'. the wire contained on said spooisyand, i

Furthermore, in the arrangement of t-hc relay as a whole, to be hereinafter specified.

General Description.

In the drawing- Figure'l is a perspective view' of my relay. Figure 2 shows the safety-adjuster part in section. A is the box covering the workingr parts, and I l B, the base.

a a are the helices or spools wound with onefourth to one-eighth the quantity of copper wire used on ordinary relays, said reduced quantity representing a resistance of from only'one to eight miles, whereas ordinary relays have a resistance of from ten' to thirty miles of No. 9 galvanized iron wire, such as is commonly used for telegraph. lines. The resistance of the ordinary relay has the effect, when a number are employed on a telegraph line, -cf retarding electric communication, and rendering it difficult to work the lilies, especially in wet, damp, and foggy weather. i

By my invention a greater number of relays can be used, and the line' work well in bad weather, in consequence of the low resist-ance offered by my instrumeut. f

b is a light-lever armature, standing upright, and having a small shaft, c, with pivot points, run through its center, and which works between two arms, dd.

This armatureis flattened below the shaft c, the

4fiatrpart f standing opposite the magnetic cores of the spools a a'.

The upper end protrudes through the box A. and

plays between two adjusting-screws, e e. O is the safety-adjuster, consisting of the'usual spring F, attached to the armature b, the other end hooked to a long, square rod, g, which passes longitudinally through a stop-piece, 7i, set in the side of box A, and has a screw-thread on its upper and lower face.

The bar works loose through the stop-piece h, and inside the box is'encreled by a spiral spring, K, fastcned near the hook of the bar, \vhichprevents the spring F, attached to the armature, from being overstretched, as is the case with adjusters now in use.

Outside the box an adjust-ing thumb-nut, Z, works on the end of the bar-g, by which the operator adjnsts the armature by the means specified above.

D is an auxiliary adjuster or fout-off, which is so arranged with the wire connections (see dotted lines) that portions of the wire or spools may be cut ont from the electric circuit. v

This is done by means of the movable armA or switch i, which, by placing it on knobs j j', reduces the resistance by withdrawing the electricity lfrom portions of the wire of v,saidapools or helices. For example, by moving the arm or switch i onto knob j, (see fig. 1,) `the entire wire of one of the spools is cutf out from the electric circuit, for the purpose of reducing the attraction of the cores upon the armaturel .This will at the same time improve the general working of the line, because that amount of resistance is taken out of the electriccircuit. This not-only has a local effec-t, but has also the general effect of improving the working of the line by cutting out the resistancepwhile in ordinary relays the withdrawing or adjusting back of the cores, as is customary, has a local eect only.

By putting the switch on knob j' it cuts. out onehalf only ot'` olie spool, at the discretion of the operator, according to the condition or working of the line.

This is accomplished by having one-half of the wire on that spool divided from the other half. lieve, has never beforelbeen donc.

Cut-offs and switches are common in telegraphy. Such I do not claim, broadly; but I am no'tf aware that they have ever before been connected with one or more of the spools or cores to reduce the effect ot' the electricity or magnetism, and make still less the resistance ou the wires. This I consider an important featurcof novelty in my relay.

This, I bc- C' latins.

lower or flat part being acted on directly by the cores,

a al', so that more or less of the magnetism in thea spools orcores may be out out and the resistance on the Wire reduced, as hereinbefore set forth.

4. The combination and arrangement of the relay, :is n whole, consisting of spools l0 a', vertical al'r'nature b arrnnged between arms (l d', sn'oty-mljustor C, and auxiliary zuljnstor 1), nrrdnged snbstuntinllyns and for the purpose hcrcinhebre Setlbrth.

In witness whereof, I have hereunto signed my naine in the prosonco of two subscribing witnesses.

BEN. B. TOYE.

Witnesses:

J. R. BRAKE, C. N. WOODWARD. 

